Brutus and Nero are the secondary antagonists of "The Rescuers". They are the pet crocodiles of Madame Medusa and their job is to patrol the island. Also, anytime Penny goes missing, their job is to search for her. At that point, it's Brutus who carries Penny in his teeth, while Nero carries her beloved teddy bear. Jimmy MacDonald was the one who did both crocs' vocal effects.
Near the end, they try to eat their mistress while she is hanging onto the mast.